but the reports that progress has been modest and uneven. does the white house -- does the military believe that the current policy can, in the meaningful sense of the word, succeed? >> well, in short, general petraeus and since the surge of troops in afghanistan, has said, that they are making headway. however, crucially, it is not irreversible. and as you've seen, he's been laying the groundwork over the last several months for a longer term. we're doing well. give us more time. and so, you've see the deadline shift from summer 2011, to the end of 2014, for an end of u.s. combat operations. and that's where the hope is that by then, they will be able to have afghans in the lead. >> as a practical matter, christiane, what would define, in the eyes of the white house and the military, success in afghanistan? >> well, what they want is to put the taliban sufficiently back on its heels so they can get governance in the provinces around afghanistan. and that the afghan forces, both army and police, can take over.